Four great encyclicals of Pope Pius XII Mystical Body of Christ - Mystici Corporis 1943|biblical studies - Divino Afflante Spiritu 1943|The Sacred Liturgy - Mediator Dei 1947|Foundations of Catholic Doctrine - Humani Generis 1950|Christmas radio broadcast 1944 - Democracy and Peace|The world co - Pius XII (New York Paulist Press, 1961)